Inventor · disambiguated record
Akifumi Yamaguchi
Also filed as: YAMAGUCHI AKIFUMI
40 granted patents·10 pending applications·224 citations·filing 1991–2021
97Inventor score
Top patents by PatentIndex Score
50 records- 0195US7986520B2Electronic deviceTOSHIBA KK·Filed 2010·Granted Jul 26, 2011·17 cites·10 claims
- 0289US8390793B2Optical ranging sensor and electronic equipmentYAMAGUCHI AKIFUMI·Filed 2010·Granted Mar 5, 2013·28 cites·18 claims
- 0386US9031472B2Developing device with a developer conveying member having paddles connecting spiral blades at one circumferential position and image forming apparatus with such a developing deviceKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted May 12, 2015·4 cites·11 claims
- 0486US7995189B2Optical distance measuring sensor and electronic deviceSHARP KK·Filed 2009·Granted Aug 9, 2011·16 cites·20 claims
- 0584US9232171B2Electronic apparatus with cooling unitTOSHIBA KK·Filed 2013·Granted Jan 5, 2016·8 cites·12 claims
- 0683US10698337B2Image forming apparatus with developer information acquisition unit that acquires information relating to deterioration of developer based on an acquired toner charging amountKYOCERA DOCUMENT SOLUTIONS INC·Filed 2019·Granted Jun 30, 2020·2 cites·8 claims
- 0783US7760332B2Optical range-finding sensor, object detection device, self-cleaning toilet seat, and method for manufacturing optical range-finding sensorSHARP KK·Filed 2008·Granted Jul 20, 2010·18 cites·13 claims
- 0882US10775727B2Image forming apparatus with a charging amount acquisition unit that performs a charging amount acquisition operation for forming a measurement toner image on an image carrierKYOCERA DOCUMENT SOLUTIONS INC·Filed 2019·Granted Sep 15, 2020·2 cites·6 claims
- 0982US8958724B2Developing device and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2013·Granted Feb 17, 2015·3 cites·12 claims
- 1081US7505121B2Multi-beam optical range sensor and self-propelled cleaner and air-conditioner equipped with the sameSHARP KK·Filed 2006·Granted Mar 17, 2009·14 cites·9 claims
- 1176US10691052B2Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2019·Granted Jun 23, 2020·1 cites·9 claims
- 1276US7005661B2Optical object identification apparatus, and printing apparatus and object classification apparatus using sameSHARP KK·Filed 2003·Granted Feb 28, 2006·18 cites·29 claims
- 1375US10185281B2Image forming apparatus provided with a photosensitive member having a photosensitive layer and a surface protection layer which is formed on the surface of the photosensitive layer and which has a hardness higher than that of the photosensitive layerKYOCERA DOCUMENT SOLUTIONS INC·Filed 2018·Granted Jan 22, 2019·1 cites·18 claims
- 1471US9304479B1Image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Apr 5, 2016·1 cites·4 claims
- 1571US8780330B2Optical distance-measuring device and electronic deviceWADA HIDEO·Filed 2012·Granted Jul 15, 2014·4 cites·15 claims
- 1670US6690457B2Optical inclination sensorSHARP KK·Filed 2001·Granted Feb 10, 2004·24 cites·11 claims
- 1768US7119887B2Optical distance measuring sensor and self-propelled cleanerSHARP KK·Filed 2005·Granted Oct 10, 2006·9 cites·12 claims
- 1866US9282275B2Television and electronic apparatusTOSHIBA KK·Filed 2014·Granted Mar 8, 2016·1 cites·7 claims
- 1965US7330241B2Optical distance measuring sensor, self-propelled cleaner, and air conditionerSHARP KK·Filed 2005·Granted Feb 12, 2008·4 cites·14 claims
- 2065US7109507B2Optical object identifying device and printing apparatusSHARP KK·Filed 2004·Granted Sep 19, 2006·5 cites·3 claims
- 2165US6674517B2Optical motion detector, transport system and transport processing systemSHARP KK·Filed 2003·Granted Jan 6, 2004·12 cites·11 claims
- 2264US8531838B2Television apparatus and electronic deviceYAMAGUCHI AKIFUMI·Filed 2011·Granted Sep 10, 2013·2 cites·8 claims
- 2363US11137340B2Particle detection sensor and particle detection apparatusSHARP KK·Filed 2019·Granted Oct 5, 2021·0 cites·14 claims
- 2462US8384011B2Optical detection device and electronic equipment for detecting at least one of an X-coordinate and a Y-coordinate of an objectSHARP KK·Filed 2010·Granted Feb 26, 2013·1 cites·8 claims
- 2560US9086480B2Optical distance-measuring device and electronic deviceWADA HIDEO·Filed 2012·Granted Jul 21, 2015·1 cites·16 claims
- 2657US6859266B2Optical movement detecting device and transport system using the sameSHARP KK·Filed 2003·Granted Feb 22, 2005·5 cites·10 claims
- 2754US7012691B2Optical moving information measuring apparatus and carrier system incorporating the sameSHARP KK·Filed 2003·Granted Mar 14, 2006·11 cites·18 claims
- 2852US2011249401A1Electronic apparatusTOSHIBA KK·Filed 2010·Application pending·0 cites
- 2950US8373128B2Optical ranging sensor and electronic deviceSHARP KK·Filed 2009·Granted Feb 12, 2013·1 cites·7 claims
- 3048US10345738B2Stirring/conveying member, and developing device and image forming apparatus therewithKYOCERA DOCUMENT SOLUTIONS INC·Filed 2017·Granted Jul 9, 2019·0 cites·8 claims
- 3148US7030402B2Optical distance measuring device and printing apparatus using the sameSHARP KK·Filed 2003·Granted Apr 18, 2006·2 cites·10 claims
- 3248US2012155024A1Electronic apparatusYAMAGUCHI AKIFUMI·Filed 2012·Application pending·0 cites
- 3347US2012113332A1Television and electronic apparatusYAMAGUCHI AKIFUMI·Filed 2011·Application pending·0 cites
- 3446US2014108832A1Information processing apparatus and operation control methodTOSHIBA KK·Filed 2013·Application pending·0 cites
- 3545US10481522B2Developing device with developing roller and thickness regulating member and image forming apparatus provided with sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2019·Granted Nov 19, 2019·0 cites·9 claims
- 3644US2022141582A1Microphone array deviceAUDIO TECHNICA KK·Filed 2021·Application pending·0 cites
- 3744US2013286292A1Television receiver and electronic apparatusTOSHIBA KK·Filed 2013·Application pending·0 cites
- 3844US2007075280A1Optical ranging sensor and electrical equipmentSHARP KK·Filed 2006·Application pending·0 cites
- 3943US9323179B2Developing unit and image forming apparatusKYOCERA DOCUMENT SOLUTIONS INC·Filed 2014·Granted Apr 26, 2016·0 cites·4 claims
- 4043US9310718B2Development device and image forming apparatus including the sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2013·Granted Apr 12, 2016·0 cites·4 claims
- 4140US2013057776A1Television and electronic apparatusYAMAGUCHI AKIFUMI·Filed 2012·Application pending·0 cites
- 4239US10175608B2Developing device and image forming apparatus provided with sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2017·Granted Jan 8, 2019·0 cites·19 claims
- 4339US6947146B2Optical object identification device and printing apparatus using the sameSHARP KK·Filed 2003·Granted Sep 20, 2005·0 cites·17 claims
- 4439US2007210267A1Optical ranging sensor and warm water wash toilet seatSHARP KK·Filed 2007·Application pending·0 cites
- 4538USD1033406SMicrophoneAUDIO TECHNICA KK·Filed 2021·Granted Jul 2, 2024·0 cites·1 claims
- 4638USD981375SMicrophoneAUDIO TECHNICA KK·Filed 2021·Granted Mar 21, 2023·0 cites·1 claims
- 4736US9377718B2Image forming apparatus and developer supply methodKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jun 28, 2016·0 cites·13 claims
- 4835US5177357ATransmissive-type photo-interruptor with molded housing and crosstalk shieldingSHARP KK·Filed 1991·Granted Jan 5, 1993·9 cites·7 claims
- 4934US9366995B2Developing device and image forming apparatus provided with sameKYOCERA DOCUMENT SOLUTIONS INC·Filed 2015·Granted Jun 14, 2016·0 cites·16 claims
- 5033US2003230703A1Optical object discriminating apparatus, processing system and transport processing systemSHARP KK·Filed 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →